Improvement in milk-coolers



dinard iatr JULIUS R. POND, OF NEW HARTFORD, CONNECTICUT.

Lenefspatm No. 95,722, ma october 12, 1869. d

IMPROVEMENT IN MILK-COOLERS.

mre- The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern:

Be `it known that I, JULIUS B. POND, of New Hartford, in the State of Connecticut, have invented v a new and useful Method and Apparatus for Cooling Condensed and New Milk and other fluids, and making ices, 85e., and removing the same freni the surface of the coolers.

It is necessary that condensed milk should be quickly cooled beforegit is packed for transportation, and it is also desirable `that new milk should be cooled quickly, in order to keep it from chemical and mechanical changes, especially when it Ais to be transported, as for use in cities, &c. rlhe methods hereto-v fore employed for that purpose have been very expensive, and, as applicable to milk, subject to the objection that they ijlled it with air, and subjected it to too great and too long-continued agitation. v

In freezing ices, &c., it has been difficult, if not impossible, to iix volatile avors, 85e., in consequence of the too great agitation, and the too long time em'- ployed iuthe process of freezing; `and they have been .frozen in a solid mass, instead of crystals or snow- To obviate these objections, and to secure -these ends, is the object of my said invention; .and I d'0 hereby declare that the following isa full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of these specifications, and ,to the letters of reference marked there# on,inwhichw 1 Figure l is the apparatus set up for use;

Figure 2 is a verticalsection; I

Figure 3 is the spiral; and Figure 4 is a vertical section of anothe'rforni ofthe spiral.

A is the wall of the inner chamberor holder.

B and B', the walls of the outer holder.

v VC is a pipe for the admission of cold water into the reservoir or holder;

D and D are openings through the inner wall of the oil-ter reservoir.

E and E' are apertures through the wall of the inner reservoir.

F, a pipe for the escape of the cold Huidv from the, inner reservoir.

G and G', the opening or space between the reservoirsA and B, through which the milk or other liquid to be cooled or frozen flows.

H, the pipe through which it is admitted.

I, a revolving coil or spiral in the opening G G', between the inner and outer reservoirs, used for hastening or retarding the passage of the liquid to be cooled, and for removing it from the surface of the reser vous.

J is a pipe for the Vescape of the liquid to be cooled or changed into ice or snow.

K is a crank for vturning the spiral.v ever, be turned by any other known means.

Fig. 3 is the spiral.

Fig. 4 is a vertical section of the spiral formed inA a` different way.

The mode of operation of my said inventiomgyvhich has been successfully tried, is as follows:

The reservoirs A and B are filled with salt and ice, or'other refrigerating-substance or compound; or cold water, or other cold fluid, is allowed to enter at the pipe C, pass through the outer reservoir, to'and through the openings D and D', E and E', into the inner lres,- ervoir, and thence out through the pipe- F. The fluid to be cooled orlfrozen is then allowed to flow, through the pipe H, into the space G. and Gf, between the two reservoirs A and B'. By revolving the crank K, the spiral I is made to pass around the reservoir A, and

rubbing against the outer surface of A, and the inner surface B, removes the liquid, cooled orcongealed,

' from' those surfaces, and presses it on to and through the pipe J, when\it is ready for use.

In case the temperature of the iiuid to be acted upon is not'suiiiciently reduced before it passes out at the pipe J, its motion may be retarded by slowing or reversing =the motion of the spiral; or, vby making the spiral as shown in fig. 4, its passage isv retarded by the thinner bend of the spiral, and pressed forward by the thicker onteibend; and it receives a rolling motion as it iiows on.

By this means, the temperature of any iluid may be readily and quickly reduced without being filled -with air, or churned; or, if desired, it may be quickly congealed to ice or snow.

What Iclaim as new, and desire to secure by Letters Patent, is

The construction and arrangement of the withindescribed milk-cooler, consisting of the inner and outer reservoirs A and B, inlet-pipe, for water, C, openings D and E, vei'iow-pipe F and voutlet-pipes H and 17, and spirals, figs. 3 and 4, substantially as and for the purpose shown.

Also, the combination of a movable spiralwith one l or more reservoirs or coolers, substantially as'shown, and for the purpose specified.

Also, the combination and arrangement of the pipes C and F and openings D and E with the reservoirs A, B, and G, substantially as shownaud described.

` J ULIUS R. POND.

Witnesses:

WM. W. Nuns, f ABM. L. SMITH.

central reservoir G, inlet 

